CVE-2025-62779
📋 TL;DR
Frappe Learning versions 2.39.1 and earlier contain a cross-site scripting (XSS) vulnerability where users can inject HTML through input fields in the Job Form. This allows attackers to execute arbitrary JavaScript in the context of other users' browsers. All users of affected Frappe Learning instances are potentially impacted.
💻 Affected Systems
- Frappe Learning (LMS)
📦 What is this software?
Learning by Frappe
⚠️ Risk & Real-World Impact
Worst Case
Attackers could steal session cookies, perform actions as authenticated users, redirect to malicious sites, or deploy malware through the application.
Likely Case
Attackers inject malicious scripts to steal user credentials or session tokens, potentially leading to account compromise.
If Mitigated
With proper input validation and output encoding, the risk is limited to minor UI disruption without code execution.
🎯 Exploit Status
Exploitation requires user interaction with malicious content; authenticated users can inject payloads.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Versions after commit 75001b494d5d8198eab20b0cd85d5bd719448ea3
Vendor Advisory: https://github.com/frappe/lms/security/advisories/GHSA-j6h8-qg65-3fpx
Restart Required: No
Instructions:
1. Update Frappe Learning to version 2.39.2 or later. 2. Apply the commit 75001b494d5d8198eab20b0cd85d5bd719448ea3 if using source. 3. Verify input sanitization is enabled.
🔧 Temporary Workarounds
Disable Job Form Input
allTemporarily disable or restrict access to the Job Form input fields.
Implement WAF Rules
allConfigure web application firewall to block HTML/JavaScript injection patterns.
🧯 If You Can't Patch
- Implement strict Content Security Policy (CSP) headers to restrict script execution.
- Enable input validation and output encoding for all user-supplied data in the application.
🔍 How to Verify
Check if Vulnerable:
Test if HTML input in Job Form fields renders as HTML rather than plain text.Check Version:
Check Frappe Learning version in admin panel or via 'bench version' command if using Frappe Bench.Verify Fix Applied:
Verify that HTML input in Job Form fields is properly sanitized and displays as encoded text.📡 Detection & Monitoring
Log Indicators:
- Unusual HTML/JavaScript patterns in form submission logs
- Multiple failed validation attempts on Job Form inputs
Network Indicators:
- HTTP requests with suspicious script tags or event handlers in form data
SIEM Query:
source="frappe_logs" AND (form_data CONTAINS "<script>" OR form_data CONTAINS "javascript:")